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Optimal Configuration And Economic Operation Model Of Multi-energy Microgrid

Posted on:2018-02-15Degree:MasterType:Thesis
Country:ChinaCandidate:Z Y WangFull Text:PDF
GTID:2322330518451524Subject:Architecture and civil engineering
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In recent years,the problems of energy shortage and environmental pollution have brought great negative impact on people's lives.Under the dual pressure,people are paying more attention to the research of multi-microgrid with multi-energy technology.As a new type of power supply system,microgrid system has diversified energy supply,high utilization rate of renewable energy,reduced environmental pollution,less feeder loss,convenient control,flexible operation and high reliability of power supply,etc.Therefore,vigorous development,research and application of microgrid technology are very necessary.As an important part of the microgrid technology,the optimal configuration and economic operation of microgrid system can effectively improve the security,reliability,stability,environmental protection and economy of the system.The optimal configuration and economic operation of microgrid system,as its name implies,contains two parts.The one refers to the problem of distributed generation(DG)configuration in the system,which considered crucial in microgrid planning and design of the initial stage,at the same time,the reasonable system configuration can effectively improve the economic efficiency of the post operation.The other is the problem of economic operation of the system.Mainly from the aspect of economy,sometimes also taking into account the influence of environment,reliability of reliability,optimizes the output power of each distributed generation and energy storage device,in order to achieve the economic and reliable operation of microgrid system.In this thesis,for the multi-microgrid with multi-energy system,it analyses and studies the configuration and operation of the system.Among them,the micro power of microgrid system is mainly composed of wind turbine,photovoltaic cells,microturbine,fuel cell,diesel generator and storage battery.The main research contents and innovations are as follows.(1)Based on the multi-microgrid with multi-energy system,it analyzes its composition and structure,studies the characteristics of the distributed generation and energy storage device,combined with its operating characteristics and important parameters,establishes the power output model of the power unit,for the establishment of system optimization model to prepare.(2)The mathematical model of optimal configuration of microgrid system is established,and the corresponding system performance evaluation index is proposed to evaluate the rationality of the model.In this paper,the total investment cost of the initial purchase equipment is converted into the annual input cost of the equipment,and the maintenance cost of the equipment is combined.As the same time,the two functions are combined as the objective function of the optimal configuration of the system.(3)The particle swarm optimization(PSO)algorithm is applied to the economic optimization problem for the economic operation of microgrid with multiple targets.This paper from five charges of the unit operation,fuel consumption,power penalty,pollutant treatment and with the external power grid electricity sales revenue,establishes the system of economic operation model with multiple objective functions,and puts forward the relevant index and multiple constraints.(4)According to the established system optimization model,in the light of actual conditions,this paper makes a case study on the optimal configuration and economic operation of the system.The results show that the design of the optimal scheme is reasonable,and it can provide a strong theoretical support for the planning and construction of multi-microgrid with multi-energy system.
Keywords/Search Tags:multi-microgrid with multi-energy, distributed generation, optimal configuration, economic operation, particle swarm optimization algorithm
PDF Full Text Request
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